R. CHITRALEKHA; M. ANITHA; N. MEENA. Near and closer relations in topology. Malaya Journal of Matematik, India, v. 8, n. 04, p. 2169–2172, 2020. DOI: 10.26637/MJM0804/0143. Disponível em: https://www.malayajournal.org/index.php/mjm/article/view/1875. Acesso em: 16 jul. 2024.